Lobelia xalapensis Kunth

Lobelia xalapensis H. B. K. Nov. Gen. & Sp. 3: 315. 1819
luibelia monticola H.B.K. Nov. Gen. & Sp. 3: 316. 1819. (Field Mus. Neg. 91111)
Lobelia palmaris Willd.; R. & S. Syst. Veg. 5; 56. 1819. (Field Mus. Neg. 9111!)
Lobelia mollis Graham, Edinb. New Phil. Jour. 8: 185. 1829. (Type from Dominica.)
Rapuntium atjine Presl, Prodr. Mon. Lob. 25. 1836. (Nomen nudum.)
Rapunlium xalapense Presl. Prodr. Mon. Lob. 25. 1836.
Rapuntium monlicolum Presl, Prodr. Mon. Lob. 25. 1836.
Rapuntium molle Presl, Prodr. Mon. Lob. 30. 1836.
Lobelia ocimoides Kunze, Linnaea 24: 178. 1851. (Based on a cultivated plant.)
Dortmannia mollis Kuntze, Rev. Gen. 972. 1891.
Dortmannia monticola Kuntze, Rev. Gen. 972. 1891.
Dortmannia ocimodes Kuntze, Rev. Gen. 973. 1891.
Dortmannia xalapensis Kuntze, Rev. Gen. 973. 1891.
Stem erect, simple or with ascending subordinate branches, 5 mm. in diameter or less at base, few-60 cm. high, green or often purplish below, usually sparsely pubescent at least below; leaves cauline, few-20, ciliate or strigose at least near base on the upper surface, and on the margins of the petioles, the blades membranous when dry, ovate, up to 4.5 cm. wide, 5.5 cm. long, slightly longer than broad (those of the middle leaves usually the largest), mostly acute at tip but the extreme apex blunt, rounded or cordate at base and then attenuate into a narrowly margined petiole 0.5-3 cm. in length, their margins sinuate, coarsely toothed with somewhat rounded teeth, these somewhat irregular, interspersed with minute callosities; inflorescence few-30 cm. long, not secund, few-40-flowered, often corymbose when young, appearing peduncu• late, the stem naked 3-10 cm. below the lowest bract, the lower flowers often distant; pedicels slender, spreading-ascending, mostly 10-15 mm. long in fruit, minutely prickly-puberulcnt, bibracteolate at base, the tip usually incurved at maturity; flower-bracts linear or subulate, entire or nearly so, bristly on margins, 3-5 mm. long or the lowermost larger; flower 4-6 (7) rnm. long, including hypanthium; corolla blue or purplish, varying to white or reddish, glabrous without, the tube sparingly hairy within, about 2.5 mm. long, entire except for the dorsal fissure, which extends to a point less than I mm. from base, the lower lip 1.5-2 mm. long, the lof>cs rounded, the two upper lobes erect, about I 5 mm. long; filament-tubc 2.0-2.5 mm. long, the filaments connate about one-third their length, glabrous or nearly so; anther-tube 0.5-1.0 mm. long, gray, the larger anthers bristly near tips or glabrous; hy|>antliium in anthesis flat or shallowly cup-shaped, prickly or bristly like the pedicel, in fruit becoming cup-shaped or depressed-hemispheric, often glabrate; capsule one-third inferior or less, ellipsoid, mostly 2-3 mm. in diameter by 4-5.5 mm. long; calyx-lobes linear-subulate, entire, 2-4 mm. long, glabrous or ciliate on the margins; seeds ellipsoid, brown, highly polished, smooth, 0.5 mm. long or less.
Tvi-K LfjCALITV: Near Jalapa, Vera Cruz.
I.>isTiiint;Tio.s: Vera Cruz to Oaxaca and thcnrc thrmighout Central and South America to n'/rthem ArKenlina; IjcvMt Antilles, Gal&paKoii iBlaiids.

Lobelia xalapensis là loài thực vật có hoa trong họ Hoa chuông. Loài này được Kunth mô tả khoa học đầu tiên năm 1819.